Perhaps you should try some spelling variations:
"diplomat" » "diploma", "diplomatie", "diplomacy"
"diplomats" » "diplomas", "diplomaties", "diplomacys", "diplomacy"
"diplomaties" » "diplomaies", "diplomatieies", "diplomacyies", "diplomatie", "diplomatics", "diplomacies"
"diplomatic" » "diplomaic", "diplomatieic", "diplomacyic"
"diplomas" » "diploma", "diplomes", "diplomacy"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ("diplomat" OR ((("diplomats" OR "diplomas") OR "diplomaties") OR "diplomatic")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(\"diplomat\" or (((\"diplomats\" OR \"diplomas\") or \"diplomaties\") or \"diplomatic\"))".
• Removing quotes may allow a broader search: ( diplomat or ((( diplomats OR diplomas ) or diplomaties ) or diplomatic )).
• Adding a wildcard symbol may retrieve word variants: ("diplomat" or ((("diplomats" OR "diplomas") or "diplomaties") or "diplomatic"))*.